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Re: [trill] Questions to TRILL Smart Endnodes draft

Linda Dunbar <linda.dunbar@huawei.com> Fri, 11 January 2013 20:21 UTC

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From: Linda Dunbar <linda.dunbar@huawei.com>
To: Radia Perlman <radiaperlman@gmail.com>
Thread-Topic: [trill] Questions to TRILL Smart Endnodes draft
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Date: Fri, 11 Jan 2013 20:21:19 +0000
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Subject: Re: [trill] Questions to TRILL Smart Endnodes draft
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Radia,

Questions inserted below:

From: Radia Perlman [mailto:radiaperlman@gmail.com]
Sent: Wednesday, January 09, 2013 4:32 PM
To: Linda Dunbar
Cc: Phanidhar Koganti; d3e3e3@gmail.com; Kesava_Vijaya_Krupak@Dell.com; hu.fangwei@zte.com.cn; trill@ietf.org
Subject: Re: [trill] Questions to TRILL Smart Endnodes draft


If there is a smart endnode on a shared link with other endnodes, it learns about its endnode neighbors, and sends directly to them (without encapsulation).  If smart E wants to talk to unknown destination D, E has to send two copies; one (without encapsulation), multicast on the link, and the other (with encapsulation), forwarded to the attached RBridge R.
[Linda] Agree

R has been warned by E of all the MAC addresses E owns.  R must drop all packets it receives on the link if either the source or destination MAC is one of the ones owned by a smart endnode on the link.

[Linda] What if multiple "smart endnode" sharing one link? For example, there could be a bridge aggregating traffic from multiple end nodes (smart and regular), or the multiple smart nodes as VMs sharing a physical server?

Linda

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